Gallass:
AutoElectNG
GAZZUZZ

I have a 1997 Infiniti J30. Auto 3L V6.

November last year, the car started jerking while accelerating. It happens at all gears. And consumes fuel excessively.

When it does this, if you take ur foot off the gas pedal and gently acceralate, everything becomes normal.
Sometimes, you can drive for the next 5-10 mins without a reoccourance, some times, it might happen up to 4 times in the space of 5 mins.

REPAIR HISTORY

i took it to the first Mech, after test-driving, he said that it's the fuel pump.

I went and bought another fuel pump and replaced it. It improved but didn't solve the problem.

I took it to someone else who ran an OBD II scan. He said that it is a wiring problem (the car wiring has never been tampered, so he knows better). He ran repairs and for like 7 days, it didn't happen again.

After some time, it started again. Loses power, jerks too.

I was advised to change the plugs, I did. After few days, it started again. Jerks.... But doesn't lose power anymore.....although it sometimes hesitates during acceleration.

Took it to a recommended auto electrician.
He ran checks. OBD isn't recording any codes. He changed exhaust sensors, MAF, sparks plug and we ran a test drive..... The problem was still there.....and it looks like it's getting worse in frequency. A new twist came about during this test. when the jerk started on the road, instead of hitting the breaks and getting it back to normal, he deliberately shifted the gear to neutral and pushed down the gas pedal. The sound/ firing wasn't that okay. It was akin as if it was jerking but the only difference now is that the car is not in motion.
once u hit the brakes, it stops immediately and MAY start jerking in less than 30 seconds

Now, a mechanic in that same shop called me aside and told me that I should go and buy another fuel pump.... That it will solve the problem. I told him that I did that before and he said that.... there's a possibility that the one I bought earlier may also be faulty.

please, I need an advice.

GAZZUZZ:

2 Corinthians 6:17

Gallass:


That's why I am here

Pipedreams:


You might have a faulty Valve body that needs to be replaced. Tell him to check that. The vehicle's transmission computer isn't sending the right signals

AutoElectNG:
I humbly suggest that Live Data may be useful in the absence of any DTCs.

Alternatively, try scanning with a different device.

tensazangetsu20:
This would be interesting. Time to learn from the pros . Op did they run a compression test on the engine since it wasn't bringing out any codes.

AutoElectNG:
History before November 2017 please

Gallass:
.

That was when I got the car.
It was a gift actually

Gallass:


I don't know sha.
The man was running so many tests, I can't say for certain if he did or not

Gallass:
.

That was when I got the car.
It was a gift actually

thebigkendo:

The person wey giviu this kind gift enh

Gallass:
AutoElectNG
GAZZUZZ

I have a 1997 Infiniti J30. Auto 3L V6.

November last year, the car started jerking while accelerating. It happens at all gears. And consumes fuel excessively.

When it does this, if you take ur foot off the gas pedal and gently acceralate, everything becomes normal.
Sometimes, you can drive for the next 5-10 mins without a reoccourance, some times, it might happen up to 4 times in the space of 5 mins.

REPAIR HISTORY

i took it to the first Mech, after test-driving, he said that it's the fuel pump.

I went and bought another fuel pump and replaced it. It improved but didn't solve the problem.

I took it to someone else who ran an OBD II scan. He said that it is a wiring problem (the car wiring has never been tampered, so he knows better). He ran repairs and for like 7 days, it didn't happen again.

After some time, it started again. Loses power, jerks too.

I was advised to change the plugs, I did. After few days, it started again. Jerks.... But doesn't lose power anymore.....although it sometimes hesitates during acceleration.

Took it to a recommended auto electrician.
He ran checks. OBD isn't recording any codes. He changed exhaust sensors, MAF, sparks plug and we ran a test drive..... The problem was still there.....and it looks like it's getting worse in frequency. A new twist came about during this test. when the jerk started on the road, instead of hitting the breaks and getting it back to normal, he deliberately shifted the gear to neutral and pushed down the gas pedal. The sound/ firing wasn't that okay. It was akin as if it was jerking but the only difference now is that the car is not in motion.
once u hit the brakes, it stops immediately and MAY start jerking in less than 30 seconds

Now, a mechanic in that same shop called me aside and told me that I should go and buy another fuel pump.... That it will solve the problem. I told him that I did that before and he said that.... there's a possibility that the one I bought earlier may also be faulty.

please, I need an advice.

AutoElectNG:
I humbly suggest that Live Data may be useful in the absence of any DTCs.

Alternatively, try scanning with a different device.

Wilfredpat22:


Please my tiny light toyota is making annoying noise or squeaks at the back rear of the drivers side whenever I pass bumpy roads? Please as the noise draws the attention of people to me



Can scanner also read Camry tiny light?the noise is annoying and comes from underneath

PS-the rods and leakages supporting the absorbers has been removed yet the noise persist

Cc and all car gurus plsss

Wilfredpat22:


Please my tiny light toyota is making annoying noise or squeaks at the back rear of the drivers side whenever I pass bumpy roads? Please as the noise draws the attention of people to me



Can scanner also read Camry tiny light?the noise is annoying and comes from underneath

PS-the rods and leakages supporting the absorbers has been removed yet the noise persist

Cc gazzu.zz auto.josh and all car gurus plsss

AutoElectNG:
Talking of fuel pump...did you install an exact fit? Brand new not used?

Never a wise decision to rely on used fuel pumps lifespan is not reliable

thebigkendo:

The person wey giviu this kind gift enh

AutoElectNG:


When you scan, no DTCs or no communication, what do you get?

Although it is possible to have issues without codes, these kinds of drivability issues should throw codes.

diportivo:
car suddenly loses power

rev it in neutral and it's jerking and sputtering

a nissan titan comes to mind.....no misfire related codes

fuel pump change did the magic

this thing no need too much oyinbo....if it isn't sputtering then there's something else involved

tensazangetsu20:

What of a fuel pressure test?

AutoElectNG:
Unless we work with data from the vehicle and extremely accurate report of what went on or wrong, we would be guessing, guessing is not a scientific way to fix a car.

It is possible the vehicle had wiring issues prior to your ownership, note the word possible, I did not say certain.

Where are you located by the way?